2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Email: <neilb@suse.de>
33 /* The largest number of disks current arrays can manage is 384
34 * This really should be dynamically, but that will have to wait
35 * At least it isn't MD_SB_DISKS.
40 int devnum
; /* to sync with mdstat info */
44 int active
, working
, failed
, spare
, raid
;
46 int devstate
[MaxDisks
];
47 dev_t devid
[MaxDisks
];
49 int parent_dev
; /* For subarray, devnum of parent.
52 struct supertype
*metadata
;
53 struct state
*subarray
;/* for a container it is a link to first subarray
54 * for a subarray it is a link to next subarray
55 * in the same container */
56 struct state
*parent
; /* for a subarray it is a link to its container
67 static int make_daemon(char *pidfile
);
68 static int check_one_sharer(int scan
);
69 static void alert(char *event
, char *dev
, char *disc
, struct alert_info
*info
);
70 static int check_array(struct state
*st
, struct mdstat_ent
*mdstat
,
71 int test
, struct alert_info
*info
,
73 static int add_new_arrays(struct mdstat_ent
*mdstat
, struct state
**statelist
,
74 int test
, struct alert_info
*info
);
75 static void try_spare_migration(struct state
*statelist
, struct alert_info
*info
);
76 static void link_containers_with_subarrays(struct state
*list
);
78 int Monitor(struct mddev_dev
*devlist
,
79 char *mailaddr
, char *alert_cmd
,
80 int period
, int daemonise
, int scan
, int oneshot
,
81 int dosyslog
, int test
, char *pidfile
, int increments
,
85 * Every few seconds, scan every md device looking for changes
86 * When a change is found, log it, possibly run the alert command,
87 * and possibly send Email
89 * For each array, we record:
91 * active/working/failed/spare drives
92 * State of each device.
93 * %rebuilt if rebuilding
95 * If the update time changes, check out all the data again
96 * It is possible that we cannot get the state of each device
97 * due to bugs in the md kernel module.
98 * We also read /proc/mdstat to get rebuild percent,
99 * and to get state on all active devices incase of kernel bug.
103 * An active device had Faulty set or Active/Sync removed
105 * A spare device had Faulty set
107 * An active device had a reverse transition
109 * percent went from -1 to +ve
111 * percent went from below to not-below NN%
113 * Couldn't access a device which was previously visible
115 * if we detect an array with active<raid and spare==0
116 * we look at other arrays that have same spare-group
117 * If we find one with active==raid and spare>0,
118 * and if we can get_disk_info and find a name
119 * Then we hot-remove and hot-add to the other array
121 * If devlist is NULL, then we can monitor everything because --scan
122 * was given. We get an initial list from config file and add anything
123 * that appears in /proc/mdstat
126 struct state
*statelist
= NULL
;
128 struct mdstat_ent
*mdstat
= NULL
;
129 char *mailfrom
= NULL
;
130 struct alert_info info
;
133 mailaddr
= conf_get_mailaddr();
134 if (mailaddr
&& ! scan
)
135 fprintf(stderr
, Name
": Monitor using email address \"%s\" from config file\n",
138 mailfrom
= conf_get_mailfrom();
141 alert_cmd
= conf_get_program();
142 if (alert_cmd
&& ! scan
)
143 fprintf(stderr
, Name
": Monitor using program \"%s\" from config file\n",
146 if (scan
&& !mailaddr
&& !alert_cmd
) {
147 fprintf(stderr
, Name
": No mail address or alert command - not monitoring.\n");
150 info
.alert_cmd
= alert_cmd
;
151 info
.mailaddr
= mailaddr
;
152 info
.mailfrom
= mailfrom
;
153 info
.dosyslog
= dosyslog
;
156 int rv
= make_daemon(pidfile
);
162 if (check_one_sharer(scan
))
165 if (devlist
== NULL
) {
166 struct mddev_ident
*mdlist
= conf_get_ident(NULL
);
167 for (; mdlist
; mdlist
=mdlist
->next
) {
169 if (mdlist
->devname
== NULL
)
171 if (strcasecmp(mdlist
->devname
, "<ignore>") == 0)
173 st
= calloc(1, sizeof *st
);
176 if (mdlist
->devname
[0] == '/')
177 st
->devname
= strdup(mdlist
->devname
);
179 st
->devname
= malloc(8+strlen(mdlist
->devname
)+1);
180 strcpy(strcpy(st
->devname
, "/dev/md/"),
183 st
->next
= statelist
;
184 st
->devnum
= INT_MAX
;
186 st
->expected_spares
= mdlist
->spare_disks
;
187 if (mdlist
->spare_group
)
188 st
->spare_group
= strdup(mdlist
->spare_group
);
192 struct mddev_dev
*dv
;
193 for (dv
=devlist
; dv
; dv
=dv
->next
) {
194 struct mddev_ident
*mdlist
= conf_get_ident(dv
->devname
);
195 struct state
*st
= calloc(1, sizeof *st
);
198 st
->devname
= strdup(dv
->devname
);
199 st
->next
= statelist
;
200 st
->devnum
= INT_MAX
;
202 st
->expected_spares
= -1;
204 st
->expected_spares
= mdlist
->spare_disks
;
205 if (mdlist
->spare_group
)
206 st
->spare_group
= strdup(mdlist
->spare_group
);
220 mdstat
= mdstat_read(oneshot
?0:1, 0);
222 for (st
=statelist
; st
; st
=st
->next
)
223 if (check_array(st
, mdstat
, test
, &info
, increments
))
226 /* now check if there are any new devices found in mdstat */
228 new_found
= add_new_arrays(mdstat
, &statelist
, test
,
231 /* If an array has active < raid && spare == 0 && spare_group != NULL
232 * Look for another array with spare > 0 and active == raid and same spare_group
233 * if found, choose a device and hotremove/hotadd
235 if (share
&& anydegraded
)
236 try_spare_migration(statelist
, &info
);
250 static int make_daemon(char *pidfile
)
253 * -1 in the forked daemon
256 * so a none-negative becomes the exit code.
264 pid_file
=fopen(pidfile
, "w");
266 perror("cannot create pid file");
268 fprintf(pid_file
,"%d\n", pid
);
279 open("/dev/null", O_RDWR
);
286 static int check_one_sharer(int scan
)
292 fp
= fopen("/var/run/mdadm/autorebuild.pid", "r");
294 fscanf(fp
, "%d", &pid
);
295 sprintf(dir
, "/proc/%d", pid
);
296 rv
= stat(dir
, &buf
);
299 fprintf(stderr
, Name
": Only one "
300 "autorebuild process allowed"
301 " in scan mode, aborting\n");
305 fprintf(stderr
, Name
": Warning: One"
306 " autorebuild process already"
313 if (mkdir("/var/run/mdadm", S_IRWXU
) < 0 &&
315 fprintf(stderr
, Name
": Can't create "
316 "autorebuild.pid file\n");
318 fp
= fopen("/var/run/mdadm/autorebuild.pid", "w");
320 fprintf(stderr
, Name
": Cannot create"
325 fprintf(fp
, "%d\n", pid
);
333 static void alert(char *event
, char *dev
, char *disc
, struct alert_info
*info
)
337 if (!info
->alert_cmd
&& !info
->mailaddr
) {
338 time_t now
= time(0);
340 printf("%1.15s: %s on %s %s\n", ctime(&now
)+4, event
, dev
, disc
?disc
:"unknown device");
342 if (info
->alert_cmd
) {
346 waitpid(pid
, NULL
, 0);
351 execl(info
->alert_cmd
, info
->alert_cmd
,
352 event
, dev
, disc
, NULL
);
356 if (info
->mailaddr
&&
357 (strncmp(event
, "Fail", 4)==0 ||
358 strncmp(event
, "Test", 4)==0 ||
359 strncmp(event
, "Spares", 6)==0 ||
360 strncmp(event
, "Degrade", 7)==0)) {
361 FILE *mp
= popen(Sendmail
, "w");
365 gethostname(hname
, sizeof(hname
));
366 signal(SIGPIPE
, SIG_IGN
);
368 fprintf(mp
, "From: %s\n", info
->mailfrom
);
370 fprintf(mp
, "From: " Name
" monitoring <root>\n");
371 fprintf(mp
, "To: %s\n", info
->mailaddr
);
372 fprintf(mp
, "Subject: %s event on %s:%s\n\n",
376 "This is an automatically generated"
377 " mail message from " Name
"\n");
378 fprintf(mp
, "running on %s\n\n", hname
);
381 "A %s event had been detected on"
382 " md device %s.\n\n", event
, dev
);
384 if (disc
&& disc
[0] != ' ')
386 "It could be related to"
387 " component device %s.\n\n", disc
);
388 if (disc
&& disc
[0] == ' ')
389 fprintf(mp
, "Extra information:%s.\n\n", disc
);
391 fprintf(mp
, "Faithfully yours, etc.\n");
393 mdstat
= fopen("/proc/mdstat", "r");
398 "\nP.S. The /proc/mdstat file"
399 " currently contains the following:\n\n");
400 while ( (n
=fread(buf
, 1, sizeof(buf
), mdstat
)) > 0)
401 n
=fwrite(buf
, 1, n
, mp
);
408 /* log the event to syslog maybe */
409 if (info
->dosyslog
) {
410 /* Log at a different severity depending on the event.
412 * These are the critical events: */
413 if (strncmp(event
, "Fail", 4)==0 ||
414 strncmp(event
, "Degrade", 7)==0 ||
415 strncmp(event
, "DeviceDisappeared", 17)==0)
417 /* Good to know about, but are not failures: */
418 else if (strncmp(event
, "Rebuild", 7)==0 ||
419 strncmp(event
, "MoveSpare", 9)==0 ||
420 strncmp(event
, "Spares", 6) != 0)
421 priority
= LOG_WARNING
;
422 /* Everything else: */
428 "%s event detected on md device %s,"
429 " component device %s", event
, dev
, disc
);
432 "%s event detected on md device %s",
437 static int check_array(struct state
*st
, struct mdstat_ent
*mdstat
,
438 int test
, struct alert_info
*ainfo
,
441 /* Update the state 'st' to reflect any changes shown in mdstat,
442 * or found by directly examining the array, and return
443 * '1' if the array is degraded, or '0' if it is optimal (or dead).
445 struct { int state
, major
, minor
; } info
[MaxDisks
];
446 mdu_array_info_t array
;
447 struct mdstat_ent
*mse
= NULL
, *mse2
;
448 char *dev
= st
->devname
;
453 alert("TestMessage", dev
, NULL
, ainfo
);
454 fd
= open(dev
, O_RDONLY
);
457 alert("DeviceDisappeared", dev
, NULL
, ainfo
);
461 fcntl(fd
, F_SETFD
, FD_CLOEXEC
);
462 if (ioctl(fd
, GET_ARRAY_INFO
, &array
)<0) {
464 alert("DeviceDisappeared", dev
, NULL
, ainfo
);
469 /* It's much easier to list what array levels can't
470 * have a device disappear than all of them that can
472 if (array
.level
== 0 || array
.level
== -1) {
474 alert("DeviceDisappeared", dev
, "Wrong-Level", ainfo
);
479 if (st
->devnum
== INT_MAX
) {
481 if (fstat(fd
, &stb
) == 0 &&
482 (S_IFMT
&stb
.st_mode
)==S_IFBLK
) {
483 if (major(stb
.st_rdev
) == MD_MAJOR
)
484 st
->devnum
= minor(stb
.st_rdev
);
486 st
->devnum
= -1- (minor(stb
.st_rdev
)>>6);
490 for (mse2
= mdstat
; mse2
; mse2
=mse2
->next
)
491 if (mse2
->devnum
== st
->devnum
) {
492 mse2
->devnum
= INT_MAX
; /* flag it as "used" */
497 /* duplicated array in statelist
498 * or re-created after reading mdstat*/
503 /* this array is in /proc/mdstat */
504 if (array
.utime
== 0)
505 /* external arrays don't update utime, so
506 * just make sure it is always different. */
507 array
.utime
= st
->utime
+ 1;;
509 if (st
->utime
== array
.utime
&&
510 st
->failed
== array
.failed_disks
&&
511 st
->working
== array
.working_disks
&&
512 st
->spare
== array
.spare_disks
&&
514 mse
->percent
== st
->percent
518 if ((st
->active
< st
->raid
) && st
->spare
== 0)
523 if (st
->utime
== 0 && /* new array */
524 mse
->pattern
&& strchr(mse
->pattern
, '_') /* degraded */
526 alert("DegradedArray", dev
, NULL
, ainfo
);
528 if (st
->utime
== 0 && /* new array */
529 st
->expected_spares
> 0 &&
530 array
.spare_disks
< st
->expected_spares
)
531 alert("SparesMissing", dev
, NULL
, ainfo
);
532 if (st
->percent
== -1 &&
534 alert("RebuildStarted", dev
, NULL
, ainfo
);
535 if (st
->percent
>= 0 &&
537 (mse
->percent
/ increments
) > (st
->percent
/ increments
)) {
538 char percentalert
[15]; // "RebuildNN" (10 chars) or "RebuildStarted" (15 chars)
540 if((mse
->percent
/ increments
) == 0)
541 snprintf(percentalert
, sizeof(percentalert
), "RebuildStarted");
543 snprintf(percentalert
, sizeof(percentalert
), "Rebuild%02d", mse
->percent
);
545 alert(percentalert
, dev
, NULL
, ainfo
);
548 if (mse
->percent
== -1 &&
550 /* Rebuild/sync/whatever just finished.
551 * If there is a number in /mismatch_cnt,
552 * we should report that.
555 sysfs_read(-1, st
->devnum
, GET_MISMATCH
);
556 if (sra
&& sra
->mismatch_cnt
> 0) {
558 sprintf(cnt
, " mismatches found: %d", sra
->mismatch_cnt
);
559 alert("RebuildFinished", dev
, cnt
, ainfo
);
561 alert("RebuildFinished", dev
, NULL
, ainfo
);
565 st
->percent
= mse
->percent
;
567 for (i
=0; i
<MaxDisks
&& i
<= array
.raid_disks
+ array
.nr_disks
;
569 mdu_disk_info_t disc
;
571 if (ioctl(fd
, GET_DISK_INFO
, &disc
) >= 0) {
572 info
[i
].state
= disc
.state
;
573 info
[i
].major
= disc
.major
;
574 info
[i
].minor
= disc
.minor
;
576 info
[i
].major
= info
[i
].minor
= 0;
579 if (strncmp(mse
->metadata_version
, "external:", 9) == 0 &&
580 is_subarray(mse
->metadata_version
+9))
582 devname2devnum(mse
->metadata_version
+10);
584 st
->parent_dev
= NoMdDev
;
585 if (st
->metadata
== NULL
&&
586 st
->parent_dev
== NoMdDev
)
587 st
->metadata
= super_by_fd(fd
, NULL
);
591 for (i
=0; i
<MaxDisks
; i
++) {
592 mdu_disk_info_t disc
= {0,0,0,0,0};
597 if (i
> array
.raid_disks
+ array
.nr_disks
) {
599 disc
.major
= disc
.minor
= 0;
600 } else if (info
[i
].major
|| info
[i
].minor
) {
601 newstate
= info
[i
].state
;
602 dv
= map_dev(info
[i
].major
, info
[i
].minor
, 1);
603 disc
.state
= newstate
;
604 disc
.major
= info
[i
].major
;
605 disc
.minor
= info
[i
].minor
;
606 } else if (mse
&& mse
->pattern
&& i
< (int)strlen(mse
->pattern
)) {
607 switch(mse
->pattern
[i
]) {
608 case 'U': newstate
= 6 /* ACTIVE/SYNC */; break;
609 case '_': newstate
= 0; break;
611 disc
.major
= disc
.minor
= 0;
613 if (dv
== NULL
&& st
->devid
[i
])
614 dv
= map_dev(major(st
->devid
[i
]),
615 minor(st
->devid
[i
]), 1);
616 change
= newstate
^ st
->devstate
[i
];
617 if (st
->utime
&& change
&& !st
->err
) {
618 if (i
< array
.raid_disks
&&
619 (((newstate
&change
)&(1<<MD_DISK_FAULTY
)) ||
620 ((st
->devstate
[i
]&change
)&(1<<MD_DISK_ACTIVE
)) ||
621 ((st
->devstate
[i
]&change
)&(1<<MD_DISK_SYNC
)))
623 alert("Fail", dev
, dv
, ainfo
);
624 else if (i
>= array
.raid_disks
&&
625 (disc
.major
|| disc
.minor
) &&
626 st
->devid
[i
] == makedev(disc
.major
, disc
.minor
) &&
627 ((newstate
&change
)&(1<<MD_DISK_FAULTY
))
629 alert("FailSpare", dev
, dv
, ainfo
);
630 else if (i
< array
.raid_disks
&&
631 ! (newstate
& (1<<MD_DISK_REMOVED
)) &&
632 (((st
->devstate
[i
]&change
)&(1<<MD_DISK_FAULTY
)) ||
633 ((newstate
&change
)&(1<<MD_DISK_ACTIVE
)) ||
634 ((newstate
&change
)&(1<<MD_DISK_SYNC
)))
636 alert("SpareActive", dev
, dv
, ainfo
);
638 st
->devstate
[i
] = newstate
;
639 st
->devid
[i
] = makedev(disc
.major
, disc
.minor
);
641 st
->active
= array
.active_disks
;
642 st
->working
= array
.working_disks
;
643 st
->spare
= array
.spare_disks
;
644 st
->failed
= array
.failed_disks
;
645 st
->utime
= array
.utime
;
646 st
->raid
= array
.raid_disks
;
648 if ((st
->active
< st
->raid
) && st
->spare
== 0)
653 static int add_new_arrays(struct mdstat_ent
*mdstat
, struct state
**statelist
,
654 int test
, struct alert_info
*info
)
656 struct mdstat_ent
*mse
;
659 for (mse
=mdstat
; mse
; mse
=mse
->next
)
660 if (mse
->devnum
!= INT_MAX
&&
661 (!mse
->level
|| /* retrieve containers */
662 (strcmp(mse
->level
, "raid0") != 0 &&
663 strcmp(mse
->level
, "linear") != 0))
665 struct state
*st
= calloc(1, sizeof *st
);
666 mdu_array_info_t array
;
670 st
->devname
= strdup(get_md_name(mse
->devnum
));
671 if ((fd
= open(st
->devname
, O_RDONLY
)) < 0 ||
672 ioctl(fd
, GET_ARRAY_INFO
, &array
)< 0) {
674 if (fd
>=0) close(fd
);
675 put_md_name(st
->devname
);
678 st
->metadata
->ss
->free_super(st
->metadata
);
685 st
->next
= *statelist
;
687 st
->devnum
= mse
->devnum
;
689 st
->expected_spares
= -1;
690 if (strncmp(mse
->metadata_version
, "external:", 9) == 0 &&
691 is_subarray(mse
->metadata_version
+9))
693 devname2devnum(mse
->metadata_version
+10);
695 st
->parent_dev
= NoMdDev
;
698 alert("TestMessage", st
->devname
, NULL
, info
);
699 alert("NewArray", st
->devname
, NULL
, info
);
705 unsigned long long min_spare_size_required(struct state
*st
)
708 unsigned long long rv
= 0;
711 !st
->metadata
->ss
->min_acceptable_spare_size
)
714 fd
= open(st
->devname
, O_RDONLY
);
717 st
->metadata
->ss
->load_super(st
->metadata
, fd
, st
->devname
);
719 rv
= st
->metadata
->ss
->min_acceptable_spare_size(st
->metadata
);
720 st
->metadata
->ss
->free_super(st
->metadata
);
725 static int check_donor(struct state
*from
, struct state
*to
)
732 /* Cannot move from a member */
736 for (sub
= from
->subarray
; sub
; sub
= sub
->subarray
)
737 /* If source array has degraded subarrays, don't
740 if (sub
->active
< sub
->raid
)
742 if (from
->metadata
->ss
->external
== 0)
743 if (from
->active
< from
->raid
)
745 if (from
->spare
<= 0)
750 static dev_t
choose_spare(struct state
*from
, struct state
*to
,
751 struct domainlist
*domlist
, unsigned long long min_size
)
756 for (d
= from
->raid
; !dev
&& d
< MaxDisks
; d
++) {
757 if (from
->devid
[d
] > 0 &&
758 from
->devstate
[d
] == 0) {
759 struct dev_policy
*pol
;
760 unsigned long long dev_size
;
763 dev_size_from_id(from
->devid
[d
], &dev_size
) &&
767 pol
= devnum_policy(from
->devid
[d
]);
768 if (from
->spare_group
)
769 pol_add(&pol
, pol_domain
,
770 from
->spare_group
, NULL
);
771 if (domain_test(domlist
, pol
, to
->metadata
->ss
->name
))
772 dev
= from
->devid
[d
];
773 dev_policy_free(pol
);
779 static dev_t
container_choose_spare(struct state
*from
, struct state
*to
,
780 struct domainlist
*domlist
,
781 unsigned long long min_size
)
783 /* This is similar to choose_spare, but we cannot trust devstate,
784 * so we need to read the metadata instead
787 struct supertype
*st
= from
->metadata
;
788 int fd
= open(from
->devname
, O_RDONLY
);
794 if (!st
->ss
->getinfo_super_disks
) {
799 err
= st
->ss
->load_container(st
, fd
, NULL
);
804 /* We only need one spare so full list not needed */
805 list
= container_choose_spares(st
, min_size
, domlist
, from
->spare_group
,
806 to
->metadata
->ss
->name
, 1);
808 struct mdinfo
*disks
= list
->devs
;
810 dev
= makedev(disks
->disk
.major
, disks
->disk
.minor
);
813 st
->ss
->free_super(st
);
818 static void try_spare_migration(struct state
*statelist
, struct alert_info
*info
)
823 link_containers_with_subarrays(statelist
);
824 for (st
= statelist
; st
; st
= st
->next
)
825 if (st
->active
< st
->raid
&&
826 st
->spare
== 0 && !st
->err
) {
827 struct domainlist
*domlist
= NULL
;
829 struct state
*to
= st
;
830 unsigned long long min_size
;
833 /* member of a container */
836 min_size
= min_spare_size_required(to
);
837 if (to
->metadata
->ss
->external
) {
838 /* We must make sure there is
839 * no suitable spare in container already.
840 * If there is we don't add more */
841 dev_t devid
= container_choose_spare(
842 to
, to
, NULL
, min_size
);
846 for (d
= 0; d
< MaxDisks
; d
++)
848 domainlist_add_dev(&domlist
,
850 to
->metadata
->ss
->name
);
852 domain_add(&domlist
, to
->spare_group
);
854 * No spare migration if the destination
855 * has no domain. Skip this array.
859 for (from
=statelist
; from
; from
=from
->next
) {
861 if (!check_donor(from
, to
))
863 if (from
->metadata
->ss
->external
)
864 devid
= container_choose_spare(
865 from
, to
, domlist
, min_size
);
867 devid
= choose_spare(from
, to
, domlist
,
870 && move_spare(from
->devname
, to
->devname
, devid
)) {
871 alert("MoveSpare", to
->devname
, from
->devname
, info
);
875 domain_free(domlist
);
879 /* search the statelist to connect external
880 * metadata subarrays with their containers
881 * We always completely rebuild the tree from scratch as
882 * that is safest considering the possibility of entries
883 * disappearing or changing.
885 static void link_containers_with_subarrays(struct state
*list
)
889 for (st
= list
; st
; st
= st
->next
) {
893 for (st
= list
; st
; st
= st
->next
)
894 if (st
->parent_dev
!= NoMdDev
)
895 for (cont
= list
; cont
; cont
= cont
->next
)
897 cont
->parent_dev
== NoMdDev
&&
898 cont
->devnum
== st
->parent_dev
) {
900 st
->subarray
= cont
->subarray
;
906 /* Not really Monitor but ... */
913 if (stat(dev
, &stb
) != 0) {
914 fprintf(stderr
, Name
": Cannot find %s: %s\n", dev
,
918 devnum
= stat2devnum(&stb
);
921 struct mdstat_ent
*ms
= mdstat_read(1, 0);
922 struct mdstat_ent
*e
;
924 for (e
=ms
; e
; e
=e
->next
)
925 if (e
->devnum
== devnum
)
928 if (!e
|| e
->percent
< 0) {
929 if (e
&& e
->metadata_version
&&
930 strncmp(e
->metadata_version
, "external:", 9) == 0) {
931 if (is_subarray(&e
->metadata_version
[9]))
932 ping_monitor(&e
->metadata_version
[9]);
934 ping_monitor(devnum2devname(devnum
));